Heat-controlling means for charge-forming devices



April 21, 1931 w. G. HEGINBOTTOM 1,801,919

HEAT CONTROLLING MEANS FOR CHARGE FORMING DEVICES Original Filed March 14, 1923 2 Sheets-Sheet l pril 21, 1931. w. G. HEGINBOTTOM 1,801,919

I HEAT CONTROLLING MEANS FOR CHARGE FORMNG DEVICES original Filed March 14, 1923 2 sheets-sheet 2 Patented Apr. 21, 193i UNI-TEDSTATES; rn'riilvrg oglf-l-"ICE WALTER HEGINBOTTOM, OE FLIN T, MICHIGAN, ASSIGNQR 'IO` CARBURETER i COMPANY, OF FLINT, IMI"I['](`:'r.i'-l1\l',y A CORPORATION, OF IhTDAl'A` HEAT-CONTROLLING MEAN S FOR HARGE-FORMING original application filed Marlen 14,1923, serial No. 625,055, Patent No. 1,750,637; Dividedand this application led July 30, 1925. Serial Nor.' 47,069. f

This invention relates to certainxnew and forth and the novel features thereof defined useful improvements in heat controlling means for lcharge forming devices and is a divisional application of my application filed March 14, 1923, Serial Number 625,055,

.now Patent No. 1,750,637, the object being to provide novelmeans for controlling the vapplication of heat to the charge forming device whereby the temperature of the charge can be regulated to al nicety in order to produce an explosive charge of high eliciency without any danger of 'overheat1ng the charge throughout the entire range of operation of the/engine under all atmospheric conditions. Y Y j Another object of my invention is to provide heat controlling means so constructed thatwhen used in connection with an internal combustion engine kthat when starting the engine I am abletofapply as large a volume of exhaust gases as desired for as. long a time as desired to heat the charge, and so arranged that when the throttle is opened to any predetermined position from closed position to full open position, themea-ns for controlling the application of heat will be operated so as to lessen the volume of the heating medium passing through the heating jacket.

A still further object of the invention is to provide means for allowing the charge throttling valve tormove anyy predetermined desired' distance before` the exhaust throt@ tling valve is moved, whereby the exhaust throttlingvalve will dwell on its seat while the throttle valve is moved a predetermined distance so as to hold the volume of exhaust gasesl in the heating chamber'for heating the charge Warming up.

A further object of the invention ,is to provide an additional valve having a connection with the throttle valve of the charge forming device sorthat the volume of exhaust gases delivered to the heat jacket will be regulated bythe position of the 'throttle valve of the charge forming device. Other and further objects and advantages quickly while theI engine is of the invention will be hereinafter set' y In the drawing l bythe appended claims..v

In the drawings, Figure l is side elevation of an internal combustion engine showing the application of my improved construction ofheat control means thereto; s f

Figure 2 is a verticalfsection showing the valve and exhaust gas intake ofthe heating jacket and for` regulating the movement of they ex.- plosive throttle valve and exhaust throttle valve ;-4 v

Figure 3 is an elevation showing the volume .valve connected thiottle valve of the charge form-ing device; an

Figure 4 is a kdetail view of the guide member in its connection with the throttle and the main exhaust valve. A

indicatesan internal combustion engine, 2 the exhaust'manifolfd, 3 the intake manifoldl and 4 a charge forming device connected thereto which is herein shown provided withY a valve controlled air inlet' to which is connected a conduit 6 extending from an air heater 7 located around the end ofthe exhaust manifold! 2, said conduit being provided with -an'add'itional valve control-led air inlet 8 fory regulating the temperatureof the air delivered to the charge forming device.

The charge forming device 4t is provided with a heating jacket 9 having an "inlet 10 which isdisposed under anoutlet 1l of the exhaust manifold 2 and secured thereto in any desired manner so that the exhaust gases from the exhaust manifold will circulate through the heat jacket 9V to heat the charge in its passage tothe internal combustion engine and-while I have shown aparticular construction of heat jacket, it is, of course, understood Vthat various forms 'of heat jackets can be employed without departingv from the spirit of my invention and therefore I to they particular manner Yof applying heat to the charge in its passage to the internal combustion engine.y

The inlet 10 ofthe heatv jacket 9 is proits connection to the cam to the arm of the do not wish toy limit myself vided with a valve 12 mounted on a stem 13 provided with an arm 14 for operating the same and is what I term a volume regulating valve for controlling the volume of ases passing into the heat chamber of the jacket and is adapted to be operated in conjunction with the controlling mechanism as will be hereinafter fully described.

The end of the exhaust manifold 2 has mounted therein an exhaust throttling valve 15 carried by a valve stem 16 provided with an arm 17 for operating the same, said valve being capable of completely closing the outlet of said exhaust manifold to cause the entire volume of exhaust gases to pass' through the heat jacket.

Secured to the end of the exhaust manifold is a coupling 18 from which extends an exhaust pipe 19 to the mufller (not shown) in the usual manner. The coupling 18 is provided with an inlet nipple 2O from which extends a conduit 21 to an outlet nipple 22 formed on the heat jacket 9 of the charge forming device whereby the exhaust gases will be by-passed around the valve 15 when in closed position so as to pass through the heat jacket and heat the explosive charge in its passage to the internal combustion en ine.

he charge forming device is provided with a throttle valve 23 carried by a shaft 24 provided with an arm 25 to which is connected an operating rod 2G controlled in the usual manner from the body of the vehicle to which the device is attached.

The main object of this invention is to control the application of heat to a nicety so that the temperature of the charge being formed by the charge forming device can be controlled from the seat of the vehicle to which the device is attached in lsuch a manner that after once being set, the application of heat is controlled by the movement of the throttle valve of the charge forming device and to accomplish this result I arrange on the shaft 24 of the throttle valve 23 a cam 27, which is loosely mounted thereon and is capable of turning on the shaft, the position of said cam being controlled by an operating rod 28 which is connected to a crank 29 provided with a lever 30 working in an indicating plate 31 secured to the dash of the motor vehicle as clearly shown in Figure l, whereby the cam can be rotated around the throttle shaft. In the drawing I have shown this cam mounted directly on the throttle shaft 24, but it is, of course, understood that the cam can be mounted adjacent the throttle shaft on a suitable support and operated in the same manner, but I have found that the manner of mounting the cam is simplified by mounting it directly upon the shaft, but I do not wish to limit myself to any particular way and position of mounting the cam,

The cam is herein shown held in its adjusted position by frictional means which comprises a pin 33 secured in the wall of the heat jacket and extending through a slot 34 formed in the cam plate 27, said pin carrying a frictional washer 35 held in frictional contact with the outer face of the cam by coil spring 36 which allows the cam to be moved by the operating means located on the dash of the motor vehicle to which the device is attached and be retained in its adjusted position.

This is only one form of means for adjusting and holding the cam plate in its adjusted position and I do not wish to limit myself to the use of this particular construction of means as I am aware that various other forms of means for adjusting and holding the cam plate in adjusted position can be used without departing from the spirit of my invention.

The cam plate is provided with a slot 37, the particular formation of which can be changed, but as herein shown it is provided at one end with a substantially vertical portion and a substantially horizontal portion, which gradually terminates in a downwardly extending portion. Slidably mounted within the slot 37 of the cam plate is a member 38 provided with a roller having guide flanges for holding the same iu the guide way formed by the slot and can be in the nature of an anti-friction roller to facilitate the movement of the member within the slot.

The member 38 is provided with a reduced outer end on which is pivotally mounted a hub 39 provided with a socket 40 in which is secured an operating rod 41 which has its free end pivotally and adjustably connected to the arm 17 of the exhaust gas throttling valve 15. The member 38 carries a rigid arm 42 which is pivotally connected at its free end to a pin 44 pivotally mounted in the outer end of an arm 45 fixed on one end of the throttled shaft 24 whereby the member 38 travels vertically in the vertical portion of the slot 37 of the cam plate when the throttle valve shaft is oscillated so as to allow the throttle valve to move a predetermined distance before the movement of the arm carried thereby causes the arm of the exhaust throttle valve 15 to move, whereby the exhaust throttle valve 15 will dwell on its seat as the throttle valve opens until a predetermined distance has been reached where the further movement of the throttle valve will cause the exhaust valve to open or move therewith, the movement of the exhaust valve in respect to the throttle valve being determined by the shape and position of the slot in the cam plate. Thile I have shown a slot of peculiar formation, I am aware that the same can be changed to increase or decrease the distance of travel of Vdescribed it will be seen that I have provided a heating means control wherein means is provided for completely diverting the exhaust gases out of their natural path of travel through a heating chamber to heat the charge in its passage to the internal combustion engine controlled by the movement of the throttle valve of the chargeforming device in connection with adjustable means whereby the volume of exhaust gases d`elivered to the heating means can be controlled to a nicety so that under different atmospheric conditions more or less heat can be applied as necessary.

It will also be noted that in connection With the heating means for heating the charge produced in the charge forming device, I have provided anair heater which is located to the engine side of the exhaust throttle valve and so connected to the air inlet that the air will be heated before being delivered to the charge forming device, means being provided for regulating the temperature of the air by an atmospheric air valve.

In order to control the volume valve l2 directly by the position of the throttle valve Vof the charge forming device, I provide a shaft 24 carrying the throttle valve 23 with an arm 62 which is connected to the arm 14 carried by the shaft 13 of the volume valve l2 by a link 63, the arm 62 being provided with one or more openings for changing the relative positions of said valves in respect to their closed positions so that the movementlof these valves in respect to one another can be adjusted,'but in practice they are so connected that the valve l2 is in open position when the throttle valve is closed and is partly or fully closed when the throttle valve is wide openV and by its inter-connection with the main exhaust valve and throttle valve through the medium of the cam, any back pressure will be reduced.

I'Vhile in the drawing and specification I have shown and described a volume valve arranged Within the inlet of the heating jacket, it is, of course, understood that the valve can be arranged in the outlet as shown in my original application Serial Number 625,055, now Patent No. 1,750,637, and therefore Ido not Wish to limit myself to the placing of this volume valve at any partil-cular point-so lon controly the: volume of exhaust through the heating jacket.

What I claim is :-`V A 1. 'Ihe-` combination with an internal combustion engine. having an exhaust passage, intake passage yand charge forming device connected thereto; of' a heater forV heating the charge in itspassage to the internal combustion engine, al duct for supplying exhaust gases from said exhaust passagey to said. heater,y a volumeI valve mounted in said duct, a valve in said. exhaust passage, a throttle valve for said charge forming devicocarried by a shaft, an arm fixed on said gases passing as it isarranged to sha-ft, a connection. between said arm and said volume valve, a member connecting the exhaust throttle valve and the charge throttling valveand means for guiding said member to vary the effect of movement of the throttle valve on; the exhaust valve.

2.V The combi-nation with an internal ycombustion engine having `an exhaust passage, intake passage and charge forming device connected thereto, of a heaterV for heating the charge in its passage to the engine, a valve controlling the passage of exhaust gases to said heater, a valve for controlling the passage of explosive charge to said engine,-an adjustableguide member a movable member mounted in said guide member, means connecting said movable member' to the lcharge Athrottling valve and exhaust throttling valve, a. volume valve for controlling, the passage of exhaust gases through saidjheater anda connection between said volumevalve v and Said charge throttling valve. Y f

8. The combination with an internal combustion,y engine having an exhaust passage, take passage and charge' forming device Connected thereto, ofa heater for heating they charge iin its passage to the engine, 'a valve for'controlling the passage of exhaust gases to. said heater, a valve' for controlling the passage ofexplosive charge to said engine, an adjustable guide member, a. movable member mounted inssai-d guide member, a connection between said movable member and= Said throttlingvalves, a volume valve controlling the,v passage of exhaust gases through said heater and a lconnection between said volume valve andthe charge throttling valve. f

intake passage'and charge forming device connected thereto, of a heater for heating' the charge.l in its passage to. thefengine, a throttle valve controlling the passage of exhaust gases through said exhaust passage,

n means for conveying the exhaust gases from said passage to said heater, a volume valve controlling the passage of exhaust gases through said heater, a throttle valve for said charge forming device, a connection between said throttle valve and said volume valve, a plate provided with a guideway disposed adjacent said charge forming device, a member mounted in said guideway, a connection between said member and the exhaust and charge throttling valves and means for adjusting the position of said plate to vary the efect of movement of the throttling valve on the exhaust throttling valve.

5. The combination with an internal combustion engine having an exhaust passage, intake passage, a charge forming device connected thereto, of a heater for heating the charge in its passage to the internal combustion engine, a duct for supplying exhaust gases from said exhaust passage to said heater, a valve in said exhaust passage, a warm air stove for supplying warm air to said charge forming device, a throttle valve for said charge forming device, a volume valve controlling the passage of exhaust gases through said heater, a connection between said volume valve and the means for connectcharge throttling valve, ing said exhaust throttling valve to the char throttling valve, means for controlling t e temperature of air delivered to said charge-forming device and means to vary the efect of movement of the charge throttling valve on the exhaust throttling valve.

6. The combination with an internal combustion engine having an exhaust passage, intake passage and charge forming device connected thereto, of a heater for heating the charge in its passage to the engine, a valve for controlling the passage of exhaust gases to said heater, a valve for controlling the passage of explosive charge to said engine, said last-mentioned valve being carried by a shaft having an arm mounted thereon, a volume valve controlling the volume of exhaust gases passing through said heater, said volume valve being carried by a shaft having an arm, means for adjustably connecting the arm of said volume valve and the arm of said throttle valve, an adjustable guide member, a movable member mounted in said guide member, a connection between said movable member and said exhaust and charge throttling valves and means arranged in the path of travel of said member to vary the elect of movement of the charge throttling valve on the exhaust throttling valve.

In testimony whereof I hereunto afiix my signature.

WALTER HEGINBOTTOM. 

